*{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        .body{
            width: 100%;
        }
        .box{
            width: 390px;
            margin: auto;
            margin-top: 60px;
            padding: 20px 40px;
        }
        h2{
            text-align: center;
            height: 50px;
            line-height: 50px;
        }
        .box>div>p{
            display: inline-block;
        }
        .box>div{
            margin: 40px 0;
        }
        #tijiao{
            width: 300px;
            height: 40px;
            font-size: 20px;
            margin: auto;
        }
        .cuo>span{
            color: red;
        }
        .cg{
            width: 100%;
            height: 100%;
            background: #99999977;
            display: none;
            position: fixed;
            top: 0;
            line-height: 200px;
        }
        .tc{
            width: 200px;
            height: 200px;
            position: absolute;
            top: 300px;
            left: 100px;
            background: #2e2e2e96;
        }
        .tc>p{
            color: #fff;
            text-align: center;
        }
        .tc>span{
            position: fixed;
            top: 0px;
            right: 20px;
        }